[Rfn(CH2)mX (X = Br, I, OTs, OTf)], and a slight excess of NaN3 in DMSO at 100 °C for 5 h, followed by steam distillation, allowed the isolation of azides Rfn(CH2)mN3 in good to excellent yields with high purity (GC assay ≥98%). Due to the stability of these fluorous azides they can be distilled at atmospheric or lower pressures for further purification. 4-Azidoperfluorotoluene (p-CF3C6F4N3) and 1-azidooctane
F-烷基化试剂的反应,包括(
全氟烷基)烷基卤化物和
磺酸盐[R fn(CH 2)m X(X = Br,I,OTs,OTf)],以及在100°C
DMSO中略有过量的NaN 3保持5小时,然后进行
水蒸气蒸馏,以高纯度(GC测定≥98%)高至极好产率分离出
叠氮化物R fn(CH 2)m N 3。由于这些
氟叠氮化物的稳定性,它们可以在大气压或更低的压力下蒸馏以进一步纯化。4-
叠氮全
氟甲苯(p- CF 3 C 6 F 4 N 3)和1-
叠氮辛烷也分别在相似的条件下从全
氟甲苯(CF 3 C 6 F 5)或
1-碘辛烷开始制备。蒸汽蒸馏可以轻松安全地分离出高达50 g的产品。